Physics
Scientific paper
Oct 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..446..199m&link_type=abstract
Seventh workshop on the physics of dusty plasmas. AIP Conference Proceedings, Volume 446, pp. 199-215 (1998).
Physics
Impurities In Plasmas, High-Frequency And Rf Discharges, Phase Transitions: General Studies
Scientific paper
Measurements on the phase transition of the plasma crystal in the sheath of an rf discharge by reducing the gas pressure in the discharge are presented. The phase transition is attributed to an instability due to the ion streaming motion in the sheath. Furthermore, low frequency waves are excited in the plasma crystal with the aid of the radiation pressure of a laser. The waves are identified as dust lattice waves, whereas dust acoustic waves show strong deviations from the measured data points. The screening length as determined from the dispersion relation, is found to be of the order of the interparticle distance. The phase transition of the plasma crystal is then analysed in view of the Yukawa phase diagram.
Homann A.
Melzer Andre
Piel Alexander
Schweigert Igor V.
Schweigert V. A.
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